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EVAL5980

The EVAL5980 demonstration board provides the design engineer with a fully functional step-down switching regulator with an output current of up to 0.7 A. The L5980 integrates STMicroelectronics step-down switching regulator, together with all the external components required for a typical application.

The rated voltage of the input capacitor and the Schottky diode rectifier repetitive peak reverse voltage are both 25 V, making the board capable of covering the entire 2.9 V - 18 V input voltage range of the L5980 device.

The board features an external resistor divider (R1 and R2) designed for an output voltage of 3.3 V.

The output voltage can be set to a level from 0.6 V up to the rated voltage of the output capacitor (16 V).

The compensation network on the demonstration board allows the use of MLCC as output filter to keep the loop stable. The inductor saturation current and forward current of the Schottky diode are within the current limit values.

The switching frequency on the demonstration board is set to 500 kHz by means of the R5 resistor connected to pin Fsw.

Key Features

Zero-load current operation

Low dropout operation: 100 % duty cycle

VFQFPN8 3 mm x 3 mm package

0.7 A DC output current

Output voltage adjustable from 0.6 V to 16 V

2.9 V to 18 V input voltage

Internal soft-start and inhibit

Over-current and thermal protection

250 kHz switching frequency, programmable up to 1 MHz

资源

技术文档

产品规格

Description

Version

Size

DB0783:
0.7 A step-down switching regulator demonstration board based on the L5980

质量和可靠性

型号

Marketing Status

Package

Grade

RoHS Compliance Grade

Material Declaration**

EVAL5980

Active

CARD

Industrial

Not compliant

test

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support
for information on specific devices.